1. What were the conditions on the planet when life began?

Answers

Answer 1

Answer: The early Earth had no ozone layer and was probably very hot. The early Earth also had no free oxygen. Without an oxygen atmosphere very few things could live on Earth. Anaerobic bacteria were probably the first living things on Earth.


Related Questions

describe one way in which the body gets rid of lactic acid

Answers

Stretching can help stimulate circulation, increase flexibility, and relieve tension. This brings more oxygen to the muscles, which reduces lactic acid production

Why do cells continue to divide in adult organisms?

Answers

Answer:

Although most of the tissues in adult organisms maintain a constant size, the cells that make up these tissues are constantly turning over. Therefore, in order for a particular tissue to stay the same size, its rates of cell death and cell division must remain in balance.

Explanation:

please mark this answer as brainliest

I need help so I'm giving 100 points away if you help with this question
The use of grass filter _______ can help block nitrates and pesticides from washing into the water system in runoff from cultivated fields

there are no answer choices so please answer slowly and think about it

Answers

Answer:

buffer zones

Explanation: rather than planting the crop right up to the water you leave some as grass or actually plant grass in that buffer zone to filter out and prevent chemicals from reaching the water system

What is science????
No spam​

Answers

The intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

Mitosis results in _______ cells and meiosis results in _______ cells. The term that applies to the cells produced in mitosis is __________, because they contain all of the chromosomes, while the term given to cells produced in meiosis is __________ because they only have half of the original chromosome number.

Answers

Answer:

1 in two daughter

2 in four daughter

3Diploid

4haploid

What are the two main types of weathering?

Answers

Answer:

Chemical weathering and physical weathering.

Explanation:

Which type of lipid has a least one double bond ( i.e. a kink?)
a -saturated
b- unsaturated
c - monosaccharide
d - disaccharide

Answers

Answer:

B Unsaturated

Explanation:

Unsaturated fat, a fatty acid in which the hydrocarbon molecules have two carbons that share double or triple bond(s) and are therefore not completely saturated with hydrogen atoms.

What are three reasons Carbon is an important molecule for living organisms?

Answers

All living organisms, in some way, contain carbon. Oil, like proteins, lipids, nucleic acids and carbohydrates, is the primary component of macromolecules. The molecular structure of Carbon makes it possible for it to bond in many different ways and with many different elements.

What are the two factors that ultimately decide what organisms can live in an area?


1 temperature and oxygen


2food and water


3food and oxygen


4water and oxygen


5water and temperature

Answers

Answer: 2. Food and water

Explanation: Good luck! :D

Discarded materials other than fluids from natural, municipal, agricultural, and industrial sources are called __________.
A)
hazardous waste
B)
air pollutants
C)
particulates
D)
medical waste
E)
solid waste

Answers

the answer is solid waste

I hope it helps you

Answer:

B

Explanation:

Most of these industrial age resources that they emit are often called air pollutants

how do we know that change is taking place around us ? what is the need to study change ? explain some example​

Answers

Answer:

Specialisation in the knowledge society and its need

Posted by Bernardo Lajus on Mon, 01/07/2013 - 11:54.

Contemporary society is characterized by globalization. The information and the speed with which they reach society amaze anyone who has experienced the 1980s and 1990s. Because of the technology and facilities it brings, the recipients of this information become increasingly demanding, in every way. Demanding with you, with others, with things, with everything, making the world so demanding, to the point that services and information are insufficient, exhausting, poor.

Because of this, the world specializes. The professions have gained new directions, new perspectives. The courses that were previously generic, such as engineering, law, medicine, became insufficient and were gaining tributaries. If before the general practitioners of mechanical engineering and law realized the professional demand, over the years and the evolution of society, it required professionals to become specialists, creating branches and opening possibilities.

Today, specialists, masters and doctors are essential for the rapid development of society, required everywhere. Despite the harm spawned (such as time demanded, or "knowing much about little), specialization in the knowledge society brings inegulable benefits. The creation of new jobs, the deepening of knowledge and the quality of services makes society evolve even more.

Thus, although the human being, in his individuality, is not expanding his way of knowing, but rather reducing himself to specificity, society as a whole plunges into a profound expansion of knowledge, bringing this to everyday life, from the most trivial to the most complex of works, specialization is necessary and beneficial.

Explanation:

Why is West Ferris not running out of water?

Answers

Answer:Pq ele é bom no que faz e está sempre a paum sso a frente da humanindade

Explanation:

Because of the fresh water shortage

Green anoles predominantly thrived on the full of greenery and less competitive island and have developed shorter legs and bigger bodies, while brown, long-legged, small-bodied anoles thrived on the treeless and competitive mainland. Scientists hypothesized that speciation (2 new species) occurred. Explain how that happened using evidence provided and what you know about speciation.

Answers

Answer:

Anolis is involved in the two green and brown species of anole speciation processes. Speciation is the process caused by evolution that results in the development of collective genetic changes during a period of time due to adaption or geological or environmental conditions.

The evolution of these two species is due to the difference of the niche or geological difference likewise here the niches of both green and brown Anoles among species in relative size as well as color and pattern.

The special job an organism plays in it's ecosystem is it's __________.
biome

population

niche

biodiversity

Answers

Answer:

Niche

Explanation:

The role a species plays in the ecosystem is called its niche. A habitat is the physical environment in which a species lives.

Answer:

niche

Explanation:

The role a species plays in the ecosystem is called its niche. A habitat is the physical environment in which a species lives.

Genetics is the study of
A: Cell Division
B: Heredity
C: Body systems
D: Sexual Reproduction

Answers

Answer:

B. Heredity

Explanation:

Answer= B (heredity).

I hope this helps.

What provides the genetic material of an organism

Answers

Answer:

its parents.

Explanation:

how would you make an extract of a food to test for reducing sugar​

Answers

To test for the presence of reducing sugars, a food sample is dissolved in boiling water. Next, a small amount of Benedict's reagent is added and the solution begins to cool. During the next four to 10 minutes, the solution should begin to change colors. If the color changes to blue, then no glucose is present. If a high amount of glucose is present, then the color change will progress to green, yellow, orange, red and then a dark red or brown.

15 Which of the following mutations would have the potential to affect future
generations of a species?
A A frame shift mutation in the X chromosome of a cheek cell
B A chromosomal mutation in the Y chromosome of a kidney cell
CA point mutation in the first chromosome of a sperm cell
D A substitution mutation in the third chromosome of a uterus cell

Answers

Answer:

c i think

Explanation:

I don't know just trying to help hope you have a good day

The answer is c a point mutation in the first chromosome of a sperm cell

help me out girlies its due

Answers

the stereotype is that all australians are some sort of zookeepers? and wear clothes like that. also that they drink beer a lot.

Answer:

the stereotype is that all australians are zookeepers? and wear clothes like that.

Explanation:

Please please please help me

Answers

Answer:

B. Electrical energy is being transformed into thermal energy

Explanation:

The energy provided by the socket is electrical and is then transformed into thermal so the hair can be dried.

NADP+ is an example of an electron carrier. Describe its function in photosynthesis.

Answers

Answer:

Its ferment oxidant-renewal of bio-reactions at cells.

what releases carbon dioxide into the atmosphere​

Answers

Answer:

Carbon Dioxide Emissions: Human Sources

Human activities such as the burning of oil, coal and gas, as well as deforestation are the primary cause of the increased carbon dioxide concentrations in the atmosphere.

Frequency and Wavelength Listed in the Item Bank are some key terms and expressions associated with the categories seen in the Venn Diagram. To find out more information about items, some have more details available when you click on them. Drag and drop each item onto the proper area of the diagram. If an item describes more than one category, be sure to place it in the overlapping space. ITEM BANK: Move to Bottom Affects the energy of a wave Decreasing this will increase the energy of a Wave Describes how rapidly a wave oscillates (moves up and down or back and forth) Describes the distance between two back to back identical parts of a wave Increasing this will increase the energy of Unit is Hertz a Wave Unit is meter​

Answers

Answer:

Frequency:

Unit is Hertz, Increasing this will increase the energy of a wave ,Describes how rapidly a wave oscillates (moves up and down or back and forth)

Both: Affects the energy of a wave

Wavelength: Unit is meter, Decreasing this will increase the energy of a wave, Describes the distance between two back to back identical parts of a wave.

Answer:

Frequency:

Unit is Hertz, Increasing this will increase the energy of a wave ,Describes how rapidly a wave oscillates (moves up and down or back and forth)

Both: Affects the energy of a wave

Wavelength: Unit is meter, Decreasing this will increase the energy of a wave, Describes the distance between two back to back identical parts of a wave

Explanation:

What is the scientific definition of a wave?

Answers

Answer:

Waves involve the transport of energy without the transport of matter. In conclusion, a wave can be described as a disturbance that travels through a medium, transporting energy from one location (its source) to another location without transporting matter.

I hope it's helpful!

Waves involve the transport of energy without the transport of matter. In conclusion, a wave can be described as a disturbance that travels through a medium, transporting energy from one location (its source) to another location without transporting matter.

What do you consider to be your culture? How do you feel about it?

Answers

Answer:

My culture is my Jewish culture.

Explanation:

I feel great about it.

the nose produces a sticky material called mucus, which is moistens the air and traps particles true or false

Answers

Answer:

True

Explanation:

It traps the particles and stops them from reaching your lungs and harming them.

In a food chain that includes, in order, plants, markhors, and snow leopards, what roles do markhors play? (Select all that apply.)

Answers

Answer:

-They are eaten by snow leopards

-They eat plants

Explanation:

Use the information to answer the following question.
A population of rabbits lives in a grassy field that is lush and green in summer and covered in snow in winter. At the start of the summer,
75% of the population are white rabbits, and the remaining 25% of the population are brown rabbits. In rabbits, white (W) is dominant
over brown (w). During the summerthe field where they live experiences a drought. The
summer drought lasts for two years, through
many generations of rabbits.
Which prediction BEST estimates the expected percent of white and brown rabbits in the population at the end of the
drought?
O A. The rabbit population will consist of 0% white rabbits and 100% brown rabbits.
OB. The rabbit population will consist of 35% white rabbits and 65% brown rabbits.
C. The rabbit population will consist of 95% white rabbits and 5% brown rabbits.
D. The rabbit population will consist of 80% white rabbits and 20% brown rabbits.

Answers

Answer:B

Explanation:

The rabbit population will consist of 35% white rabbits and 65% brown rabbits. Therefore, option B is correct.

What are the limiting factors of the rabbit population?

Until a limiting factor, such as low reproduction, food scarcity, predation, disease, and/or weather conditions restrict populations, the population tends to grow.

Some density-dependent limiting factors are the spread of pathogens, competition for nesting locations, the destruction of habitat, increase in the population of predators. Several predators, including raptors and coyotes, use rabbits as food, but in urban and suburban areas, cats and dogs pose the biggest threat. Some abiotic limiting factors are drought, flood, earthquake, and all types of natural disasters.

The rabbit population will consist of 35% white rabbits and 65% brown rabbits. Therefore, option B is correct.

Learn more about the limiting factors of rabbits, here:

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Despite his fear of germs, Howard Hughes neglected his own hygiene despite having those around him follow strict cleanliness practices. Hughes had these odd behaviors because __________.
A.
he believed he was unable to escape any infection
B.
he developed obsessive-compulsive disorder at an old age
C.
he thought he would be contaminated from the outside
D.
his paralysis at a young age prevented him from being self-sufficient

Answers

Answer: it’s c he thought he would be contaminated from the outside

Explanation:

I took the test

Howard Hughes neglected his own hygiene despite having those around him follow strict cleanliness practices. Hughes had these odd behaviors because he thought he would be contaminated from the outside.

What is importance of cleanliness?

Cleanliness gives rise to a good character by keeping body, mind, and soul clean and peaceful. The cleanliness only which helps to improve our personality by keeping clean externally and internally.

Thus, option "C" is correct.

To learn more about cleanliness click here;

https://brainly.com/question/4279403

Which organelles must work together to provide food and energy to a plant cell?

Answers

Answer:

Mitochondria are the working organelles that keep the cell full of energy. In a plant cell, chloroplast makes sugar during the process of photosynthesis converting light energy into chemical energy stored in glucose.

Chloroplast and mitochondria are organelles that must work together to provide food and energy to a plant cell.

Plants are living organisms that are capable of nourishing themselves from inorganic substances.

The complex chemical process by which they manage to do so is called photosynthesis and it takes place in chloroplasts.

Chloroplasts are elliptical-shaped organelles - their number varies between 20 and 100 in each plant cell - found in leaves and possessing the enzymatic machinery necessary to transform solar energy into chemical energy and, finally, into food.

The plant cell needs energy to grow and multiply and the mitochondria provide most of this energy by performing the last stages of the breakdown of food molecules.

Its main function is to supply the electron carriers (ATP), a product of cellular respiration, which provide the energy that the cell needs.

Therefore, we can conclude that within the leaves of plants, in the chloroplasts of plant cells, the chemical process that transforms inorganic matter into food takes place and the mitochondria are the energy-producing organelles.

Learn more here: https://brainly.com/question/21759042

Other Questions
Parmesan Company uses the direct method for its statement of cash flow. It reports the following information regarding the year 2014: From the income statement: Sales Revenues, $265,000 Cost of Goods Sold, $210,000 Operating expenses, $31,000 From the balance sheet: Beginning BalanceEnding Balance Accounts Receivable:$14,500$17,800 Inventory:23,50017,800 Accounts Payable:6,00013,500 Accrued Liabilities:4,0001,500 On the statement of cash flows, what amount will be shown for payments to suppliers for inventory purchases 3. Complete the following as in the example:723 = 7 hundreds + 2 tens + 3 unitsa. 678 =b. 5 021 =C. 7 804 =d. 6 300 = what is a defult? pls help if you wouldn't mind -5/6+1/4Simplify if needed Brainliest what is the answer yx3=15? 1/12x-1/12y=13 1/3x-1/6y=20 Jackie Robinson was a board member of what? Plz help me reeee Only have ten minutes left 3) Asanji's school is selling tickets to the annual dance competition. On the first day of ticket sales theschool sold 1 senior citizen ticket and 2 child tickets for a total of $32. The school took in $208 on thesecond day by selling 12 senior citizen tickets and 8 child tickets.This situation is modeled by the system below where x-a senior ticket and ya child ticketx + 2y = 3212x + 8y = 208Find the price of a senior citizenticket and the price of a child ticket.A) senior citizen ticket: $12, child ticket: $4B) senior citizen ticket: $6, child ticket: $16C) senior citizen ticket 10$, child ticket 11$D) senior citizen ticket: $9, child ticket: $6 To find where the Amazon river meets the rain forest, you would reference a a. Data map c. Physical map b. Feature map d. Political map Please select the best answer from the choices provided A B C D Which sentence is true about these shapes?The shapes all have 4 corners.BTheir sides are the same length.Every shape has 5 corners. Someone help me, please:) the government of sparta was designed to Which of the following is a true statement?A.) A number is divisible by two and three if the number ends in a 0, 2, 4, 6, or 8.B.) A number is divisible by three and nine if the sum of the digits is divisible by three.C.) A number is divisible by nine if the last two digits are divisibly by nine.D.) A number is divisible by six if the number is divisible by both two and three. 1. El gnero lrico tiene: a. Planes b. Constituyentes C. Riveras d. Cartas. There were 60 students enrolled in Grade 5 last year. If 66 students are enrolled in the same grade level this year, what is the percentage increase in the number of Students? Encuentre el resultado de la suma de las fracciones, simplifique la fraccion. 6/7+2/8= one of mr jones autographed baseballs is worth $55.00. if the value increases by 3% in the next year, what will be the new value of the baseball what is 9 1/6 - 2 3/4? hhhhhhhhhhhhhheeeeeeeeeeeeeeelllllllllllllllllllllllllllllpppppppppppppppppp